kalidou.dev

Software engineer, 10+ years shipping production code in web3, healthcare, and fintech.

I ship React and Next.js products end to end, from first line of code to production. I've built real-time data pipelines, checkout and payment flows, and mobile apps used by real people. Right now I'm exploring how AI changes the way interfaces get built.

Ethereum Foundation · ethereum.org · Unlock Protocol · Facile.it · Gruppo San Donato

Based in Luxembourg · Available for freelance and full-time roles

years as a frontend engineer
10+
open-source commits
1,100+
grants, awards & hackathon prizes
5

Selected work

all works →

Recognition

About

I'm a senior software engineer from Italy, based in Luxembourg, specialized in React, Next.js, and TypeScript, and increasingly applying that to AI-powered products.

My ten years run through healthcare, fintech, and web3: accessible patient-facing tools at one of Italy's largest hospital groups, insurance products at Facile.it, open-source infrastructure at Unlock Protocol, and most recently the Ethereum Foundation's privacy research team.

I care about the unglamorous things that make products feel good: performance under bad networks, accessibility as a default, and code the next engineer can read.

Experience

Independent Product Work

Jan 2026 – Present

Founder & Full-Stack Engineer. Building FerryFetch and exploring AI-assisted product development.

Designing and building FerryFetch, a real-time ferry-tracking product in development on public AIS data, covering the data pipeline, a sailing state machine, schedule integration, and the passenger-facing frontend. Alongside it, prototyping product ideas and exploring agent-driven UX patterns and AI-assisted engineering workflows in modern web apps.

Ethereum Foundation (Privacy & Scaling Explorations)

Aug 2023 – Dec 2025

Frontend Engineer. Built the public web presence of Ethereum's privacy research team.

Primary frontend engineer for pse.dev (450+ commits), the ZK-Kit website, and Bandada. Authored the 'Privacy on Ethereum' section of ethereum.org. Developed a component library shared across PSE projects and contributed to event platforms such as Devconnect and ETHDenver.

Staking Rewards

Jul 2024 – Feb 2025

Frontend Engineer (part-time contract). Frontend interfaces for the staking-data platform, alongside the EF role.

Contract engagement building and refining frontend interfaces for staking analytics in DeFi ecosystems.

Unlock Protocol

Feb 2022 – Aug 2023

Frontend Engineer. Shipped five major features and led the JavaScript-to-TypeScript migration, 650+ open-source commits.

Designed and built the no-code Checkout Builder, redesigned the dashboard and settings, integrated smart-contract functionality into the frontend, and introduced unit and module testing across the app.

Gruppo Ospedaliero San Donato

Jun 2020 – Mar 2022

Frontend Developer. Accessible patient-facing frontends for one of Italy's largest private hospital groups.

Focused on cross-browser compatibility and accessibility, particularly for visually impaired users. Worked with design and backend teams to turn wireframes into functional patient-facing tools.

Facile.it

Jul 2018 – Jun 2020

Frontend Developer. Consumer products for Italy's largest insurance comparison site.

Built and maintained web applications across multiple business units and wrote a custom internal form-validation library to streamline user input handling.